Individual Cylinder Trims Discussion

[Terminal_Crazy]

I've read a bunch about your project searching for ideas for mine - it may be worth the attempt. I was pretty frustrated with the parking lot manners in SD/CL but the difference is night and day with the MAF. I have no idea why, but I'm not going to look that gift horse in the mouth. I was on the fence as to whether it was worthwhile to finish installing the A/C piping and charge it, but I'm thinking it'll handle it now.

The only issue I can't seem to resolve is surge / bucking in gear at closed throttle. I know the fix, but don't want to take idle timing out because at 29 the lope turns into a "dead cylinder" feel that shakes the car while at 30 you can barely feel it.

I might switch the MAF back of again then next time i go out.
Mine just felt uptight like itr was being held back.
Timing was around 39. Idle was really smooth but it didn't drive nice. SDOL fattened it up but it cruised nicely evreywhere else.
Increasing the timing smoothed idle, reduced Ibpw, reduced MAP etc etc everything we are looking for.... just drove a bit jerky.

I've since raised my O2 swing thresholds up. It passed the emmissions test like that and drives much better with the lowered timing.

What does your int delay table vs airflow, and corrcl vs airflow look like?

By my estimation the O2s are only around 6-8 inches further from the exhaust ports with mine (stainless works C4). I'm having trouble finding pics of your headers to compare.

[/QUOTE]
Fast 02 Rich/Lean
0 451
16 438
32 424
48 424
64 424

o2 Int Delay - Airflow
0 0.80
16 0.66
32 0.46
48 0.43
64 0.38

CorrCL - Airflow
0 08
16 26
32 26
48 26
64 32

I'll stick a pic of the headers on my website.
http://www.sand-hill.uk/TerminalCraz...Length_004.jpg

The port for the O2 sensor is basicaly at the end of the header pipe rather than in the collector.


Mitch